A bottle of Soylent contains 400 calories. It contains exactly 20% of each RDA-recognized vitamin, about 30 grams of carbs, a healthy balance of fats, and protein. Preparation is shaking the bottle for about three seconds, and peeling off a little foil seal.
Used to be you couldn’t drink it fast without getting digestion issues but now they’ve added enzymes to help digest the oats, so you can chug that bottle without issue.
A little more expensive than groceries you prepare, but cheaper than any buyable prepared breakfast you’d get from a coffee shop, diner, convenience store, or fast food joint.